CN103469209B - A kind of Al-Li alloy milling preprocessing technical method - Google Patents
A kind of Al-Li alloy milling preprocessing technical method Download PDFInfo
- Publication number
- CN103469209B CN103469209B CN201310426794.3A CN201310426794A CN103469209B CN 103469209 B CN103469209 B CN 103469209B CN 201310426794 A CN201310426794 A CN 201310426794A CN 103469209 B CN103469209 B CN 103469209B
- Authority
- CN
- China
- Prior art keywords
- wash
- cold wash
- bright dipping
- cold
- technical method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Chemical Treatment Of Metals (AREA)
- ing And Chemical Polishing (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses a kind of Al-Li alloy milling preprocessing technical method, processing method is as follows: 1) bright dipping; 2) cold wash; 3) caustic corrosion; 4) Warm Wash; 5) cold wash; 6) bright dipping; 7) cold wash; 8) sulfur acid anodizing; 9) cold wash; 10) sodium dichromate 99 is filled; 11) Warm Wash; 12) spray; 13) dry.The present invention, by after introducing sulfur acid anodizing process modification pre-treating technology, substantially increases the bonding force of part and protecting glue, avoids milling and cross erosion, reduce condemnation factor, improve quality product.
Description
Technical field
The present invention relates to a kind of Al-Li alloy milling preprocessing technical method.
Background technology
Al-Li alloy has the properties such as low density, high elastic coefficient, high specific strength and high specific stiffness, applies more and more extensive in industrial sector.In actual milling is produced, due to Al-Li alloy material itself and chemical milling protective colloid bonding force very poor, the part after milling often occur milling district over etching (also known as: lick limit) phenomenon, cause parts batch to reprocess, even scrap.Corrode part and carry out machinery to crossing after milling to add work or brand-new be the way that current producer uses, this way efficiency is lower, and machinery is added work and delayed work and mistake, and affect quality product, new workpieces increases production cost especially, and newly workpieces cannot be ensured the quality of products.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of Al-Li alloy milling preprocessing technical method is provided.
The technical solution used in the present invention is:
A kind of Al-Li alloy milling preprocessing technical method, processing method is as follows: 1) bright dipping: the heavier greasy dirt of removing piece surface; 2) cold wash; 3) caustic corrosion: removing part surface oxidized skin; 4) Warm Wash; 5) cold wash; 6) bright dipping: recover part light matrix; 7) cold wash; 8) sulfur acid anodizing; 9) cold wash; 10) sodium dichromate 99 is filled; 11) Warm Wash; 12) spray; 13) dry.
Above-mentioned Al-Li alloy milling preprocessing technical method, described sulfur acid anodizing technique is as follows: sulfuric acid ρ=1.84g/ mL, is mixed with 97 ~ 110mL/L, and temperature is 13 ~ 25 DEG C, current density 0.8A/dm
3~ 1.5 A/dm
3, voltage 13V ~ 18V, time 10min.
Above-mentioned Al-Li alloy milling preprocessing technical method, described sodium dichromate 99 fill process is as follows: sodium dichromate aqueous solutio (Na
2cr
2o
72H
2o), 45g/L ~ 65 g/L, pH value is 5.0 ~ 6.0, temperature: 90 ~ 100 DEG C, time 10min.
Beneficial effect of the present invention: the present invention, by after introducing sulfur acid anodizing process modification pre-treating technology, substantially increases the bonding force of part and protecting glue, avoids milling and cross erosion, reduce condemnation factor, improve quality product.This overlaps new Al-Li alloy milling pre-treatment flow process, and operation is simple, can be widely used in Al-Li alloy milling and related process.
Embodiment
A kind of Al-Li alloy milling preprocessing technical method, processing method is as follows:
1) bright dipping: part dress immerses bright dipping in salpeter solution after hanging, the heavier greasy dirt of removing piece surface, technology controlling and process: the nitric acid getting ρ=1.42g/ mL, is mixed with the aqueous nitric acid of 210 ~ 360mL/L, under room temperature condition, soaks 2 ~ 5min;
2) cold wash: part cleans in cold water;
3) caustic corrosion: removing part surface oxidized skin, technology controlling and process: aqueous sodium hydroxide solution, 20g/L ~ 35g/L, temperature 40 ~ 55 DEG C, time 0.5 ~ 2min;
4) Warm Wash: part cleans in the warm water of 40 ~ 60 DEG C;
5) cold wash: part cleans in cold water;
6) bright dipping: recover part light matrix, technology controlling and process: the nitric acid getting ρ=1.42g/ mL, is mixed with the aqueous nitric acid of 210 ~ 360mL/L, and under room temperature condition, soak time is to part gloss;
7) cold wash: part cleans in cold water;
8) sulfur acid anodizing: sulfuric acid ρ=1.84g/ mL, is mixed with 97 ~ 110mL/L, temperature is 13 ~ 25 DEG C, current density 0.8A/dm
3~ 1.5 A/dm
3, voltage 13V ~ 18V, time 10min;
9) cold wash: part cleans in cold water;
10) sodium dichromate 99 is filled: sodium dichromate 99 (Na
2cr
2o
72H
2o) aqueous solution, 45g/L ~ 65 g/L, pH value is 5.0 ~ 6.0, temperature: 90 ~ 100 DEG C, time 10min;
11) Warm Wash: part cleans in the warm water of 40 ~ 60 DEG C;
12) spray: room temperature water spray 1 ~ 2min;
13) dry: seasoning or pressurized air dry up.
Claims (1)
1. an Al-Li alloy milling preprocessing technical method, is characterized in that processing method is as follows: 1) bright dipping: the heavier greasy dirt of removing piece surface; 2) cold wash; 3) caustic corrosion: removing part surface oxidized skin; 4) Warm Wash; 5) cold wash; 6) bright dipping: recover part light matrix; 7) cold wash; 8) sulfur acid anodizing technique: sulfuric acid ρ=1.84g/ mL, is mixed with 97 ~ 110mL/L, temperature is 13 ~ 25 DEG C, current density 0.8A/dm
3~ 1.5 A/dm
3, voltage 13V ~ 18V, time 10min; 9) cold wash; 10) sodium dichromate 99 fill process: sodium dichromate aqueous solutio 45g/L ~ 65 g/L, pH value is 5.0 ~ 6.0, temperature: 90 ~ 100 DEG C, time 10min; 11) Warm Wash; 12) spray; 13) dry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310426794.3A CN103469209B (en) | 2013-09-18 | 2013-09-18 | A kind of Al-Li alloy milling preprocessing technical method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310426794.3A CN103469209B (en) | 2013-09-18 | 2013-09-18 | A kind of Al-Li alloy milling preprocessing technical method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103469209A CN103469209A (en) | 2013-12-25 |
| CN103469209B true CN103469209B (en) | 2015-10-28 |
Family
ID=49794244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310426794.3A Active CN103469209B (en) | 2013-09-18 | 2013-09-18 | A kind of Al-Li alloy milling preprocessing technical method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103469209B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1006000B (en) * | 1985-04-23 | 1989-12-06 | 东北工学院 | Method to produce white film on surface of aluminum or aluminum alloys |
| CN1089668A (en) * | 1993-01-16 | 1994-07-20 | 成都科技大学 | The composite coloration method of aluminium and aluminium alloy |
| CN1303957A (en) * | 2000-01-13 | 2001-07-18 | 沈阳黎明铝门窗工程公司 | Artificial stainless steel colour electro-colour process for aluminium sections |
| CN103173833A (en) * | 2013-03-07 | 2013-06-26 | 洛阳伟信电子科技有限公司 | Anodization closing method for improving corrosion resistance of aluminum alloy |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001049492A (en) * | 1999-08-11 | 2001-02-20 | Nippon Alum Co Ltd | Anodizing treating method |
-
2013
- 2013-09-18 CN CN201310426794.3A patent/CN103469209B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1006000B (en) * | 1985-04-23 | 1989-12-06 | 东北工学院 | Method to produce white film on surface of aluminum or aluminum alloys |
| CN1089668A (en) * | 1993-01-16 | 1994-07-20 | 成都科技大学 | The composite coloration method of aluminium and aluminium alloy |
| CN1303957A (en) * | 2000-01-13 | 2001-07-18 | 沈阳黎明铝门窗工程公司 | Artificial stainless steel colour electro-colour process for aluminium sections |
| CN103173833A (en) * | 2013-03-07 | 2013-06-26 | 洛阳伟信电子科技有限公司 | Anodization closing method for improving corrosion resistance of aluminum alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103469209A (en) | 2013-12-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105603409B (en) | A kind of Aluminum Alloy Room Temperature alkalinity chromium-free passivation liquid and passivating method | |
| CN102965675A (en) | Pickling passivation method of stainless steel | |
| CN106119869A (en) | A kind of High Efficiency Rust Remover | |
| CN103882451B (en) | A kind of water base normal temperature rust-removing and antirusting agent and preparation method thereof | |
| CN103272749A (en) | Surface treatment method of zinc alloy die casting | |
| CN103469209B (en) | A kind of Al-Li alloy milling preprocessing technical method | |
| CN107034507A (en) | 7 series alloys process of surface treatment | |
| CN103710736A (en) | Aluminum alloy hole sealing agent | |
| CN104327776B (en) | Anti-oxidant rub resistance binding agent and preparation method thereof | |
| CN102560465B (en) | A kind of metal surface protection pre-processing process | |
| CN105568304A (en) | Dewaxing fluid for cleaning metal product | |
| CN102677120A (en) | Hole sealing treatment method for aluminum and aluminum alloy anodized films | |
| CN104451729B (en) | Rust cleaning reagent | |
| CN106119865A (en) | A kind of cleaner for metal of environment-friendly high-efficiency | |
| CN104630758A (en) | Anticorrosion method of stainless steel seal head through pickling and passivation | |
| CN106222662A (en) | Plating magnalium zinc material polishing agent | |
| CN105153931A (en) | Preprocessing agent for coating inner wall of solar energy power generating and heat storing device | |
| CN103695924B (en) | A kind of five metals salt spray resistance antirust solution and preparation method thereof | |
| CN104630797A (en) | Pickling and passivation technology for stainless steel seal head | |
| CN103710692A (en) | Preparation method of corrosion-resistant SUS301 stainless steel band | |
| CN105499838A (en) | Steel structure welding auxiliary | |
| CN105950060A (en) | Building starch adhesive | |
| CN106835240A (en) | Integrated film layer preparation method that magnesium lithium alloy thermal control is anti-corrosion | |
| CN104877753A (en) | Working fluid for wire cutting and machining | |
| CN205021295U (en) | Squirt of lathe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |